Recovery of sediments from the bottom of the sea by suspended suction pipe
AssigneePreussag Aktiengesellschaft
InventorsHans Amann, Jurgen Burkhardt
Life of this patent
Estimating the term…
Abstract
In a method and apparatus for the recovery of sediments from the sea bottom, a suction head is lowered into the sediment and continuously moved in the sediment. The suction head includes loosening means in the form of a pivot plate with blades which pivot relative to the suction head in response to continuous movement of the suction head to scrape the sediment to loosen it.
Claims12
A method for the recovery of sediments from the sea bottom by means of a suspended suction pipe having an upper end and provided at its lower end with a suction head adapted to be slowly lowered into the sediment, said suction head comprising a housing, said housing having openings therein, said suction head having mounted thereon lateral loosening means pivotably movable with respect to said housing at said openings for scraping and disintegrating the sediment, comprising activating the loosening means to scrape and disintegrate the sediment vertically by moving the suction pipe continuously vertically up and down and progressively advancing the suction head laterally forward.
An apparatus for the recovery of sediment from the sea bottom by a floating body comprising a suction pipe suspended from said floating body, the lower end of the suction pipe having attached thereto a suction head, said suction head comprising a housing having openings and having mounted thereon a lateral loosening means pivotably movable with respect to said housing at said openings for scraping the sediment,
- suspension means suspending the upper end of the suction pipe from the floating body, and
- means for maintaining the suction pipe in continuous reciprocating vertical motion.
Dependencies are inferred from the claim text.